What was found
LOWER FUSELAGE CENTER WING REAR SPAR BULKHEAD STA 663.75 VAPOR BARRIER SUPPORT STIFFENER CRACKED @ LOWER RADIUS LBL 28 MKD DOT<[01] REMOVED STIFFENER AT LOWER FUSELAGE CENTER REAR SPAR BULKHEAD STA 663.75 LBL 28 FOR CRACK SRM 51-40-02-0G-0;[02] RECEIVED NEW PART PO#1709797) LOCATED NEW STIFFENER AND DRILLED NEW HOLES SRM 51-40-05-0G-0;[03] RII -- VERIFIED STEPS 1. AND 2. <BR>OK TO TREAT AND PRIME STIFFENER.;[04] TREATED AND PRIME NEW HOLES AT NEW STIFFENER AMM 51-21-72-370-804 AND 51-2-41-370-803;[05] VERIFIED STEP 4. <BR>OK TO INSTALL STIFFNER.;[06] INSTALLED STIFFNER AT LOWER FUSELAGE CENTER WING REAR SPAR BULKHEAD STA 663.75 VAPOR BARRIER LOWER RADIUS LBL 28 REF SRM 51-40-02-0G-0;[07] VERIFIED STEP 6